Energy flow and nutrient cycling are two important components of an ecosystem. What will be true comparison of the two?

1. The amount of energy is much greater than the amount of nutrients
2. Organisms always need nutrients, but they don't always need energy
3. Nutrients are recycled, but energy is not
4. Organisms always need energy, but they don't always need nutrients
Subtopic:  Energy Flow | Nutrient Cycling |
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